Experiments and Analyses on Fuel Expansion and Bowing Reactivity Worth in Mock-up Cores of Metallic Fueled Fast Reactors at FCA

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概要

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• Axial fuel expansion and radial fuel bowing were simulated in mock-up cores of metallic fueled fast reactors at the Fast Critical Assembly (FCA). Reactivity worth caused by the simulation was measured and compared with calculations. Based on these experiments and calculations, the applicability of current calculation methods was discussed for both the first order perturbation theory (FOP) and the exact perturbation theory (EP). For the axial fuel expansion reactivity worth, both FOP and EP showed 10 to 20% smaller values than the experiment. This underestimation was consistent to a C/E trend of axial distributions of plutonium sample worth. No significant difference was observed between FOP and EP, when transport correction was applied. For the radial fuel bowing reactivity worth, the FOP showed about 10% larger values than the EP. Near the core central plane, the EP with transport correction showed good agreement with the experiment, while FOP showed overestimation by 14%. At the core axial edge, however, both FOP and EP underestimated the reactivity worth by more than 10%.

• 社団法人 日本原子力学会の論文
• 1999-10-25

著者

• Oigawa Hiroyuki

  Department Of Nuclear Energy System Japan Atomic Energy Research Institute

• IIJIMA Susumu

  Department of Nuclear Energy System, Japan Atomic Energy Research Institute

• BANDO Masaru

  Hitachi Research Laboratory, Hitachi, Ltd.

• Bando Masaru

  Hitachi Research Laboratory Hitachi Ltd.

• Iijima Susumu

  Department Of Nuclear Energy System Japan Atomic Energy Research Institute

関連論文

• A Proposal of Benchmark Calculation on Reactor Physics for Metallic Fueled and MOX Fueled LMFBR Based upon Mock-up Experiment at FCA
• Experiments and Analyses on Sodium Void Reactivity Worth in Uranium-Free Fast Reactor at FCA
• Experiments and Analyses on Fuel Expansion and Bowing Reactivity Worth in Mock-up Cores of Metallic Fueled Fast Reactors at FCA
• Experiments and Analyses on Sodium Void Reactivity Worth in Mock-up Cores of Metallic Fueled and MOX Fueled Fast Reactors at FCA

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